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Table 2 Relationships between clutch sizes and female body mass, laying date, apparent nest survival rate and temperature variables in four populations of two congeneric plovers (GLMM): white-faced plover at Paisha Island (PI), and Kentish plover at Bohai Bay (BH), Qinghai Lake (QH), and Taitema Lake (TL)

From: The allocation between egg size and clutch size depends on local nest survival rate in a mean of bet-hedging in a shorebird

Parameter Estimate SE χ2 P
Clutch size (n = 541)
Intercept 1.197 0.114   
Populations (BH as baseline)    29.019  < 0.001***
 QH 0.101 2.888   
 TL − 0.008 0.053   
 PI − 0.175 0.038   
Female body mass − 0.000 0.002 0.002 0.965
Laying date − 0.003 0.001 24.375  < 0.001***
Ambient temperature 0.011 0.004 8.544 0.003**
Daily temperature difference − 0.004 0.006 0.431 0.512
Temperature variance 0.060 0.077 0.612 0.434
Apparent nest survival rate − 0.077 0.038 4.078 0.043*
  1. The parameter Years was entered as a random factor
  2. Significant relationships are indicated as * P < 0.05, **P < 0.01, and *** P < 0.001